EMAMP allows you to install Apache PHP MySQL on your Mac without altering system files. It's modular design allows you to run different versions of php/mysql/apache without them interfering with each other.

PortWatcher will regularly scan switches in a LAN, and record into a DB which MAC-addresses are assigned to which ports. The result is that network administrators will be automatically informed of any new devices which are attached to their networks.

RadMacLab is a php &amp; mysql based management module for identifying macintosh computers via MAC address for management with Radmind. It allows setting of network info and manging certificates through a centralized database.